Method of making rubber stamps or casts



(No'ModeL) Q 4 'W-, P. BARNES.

METHOD OF MAKING RUBBBRSTAMPS OR GASTS. No. 489,448. Patented Jam 10,1893.

34412124440; Mm 9; BW

aria 414013 UNITED STATES PATENT OFFICE.

WILLIAM F. BARNES, OF ORLANDO, FLORIDA.

METHOD OF MAKING RUBBER STAMPS OR CASTS.

SPECIFICATION forming part of Letters Patent No. 489,448, dated January10, 1893.

Application filed February 20, 1892. Serial No. 422,260. (No model.)

To ctZZ whom it may concern.-

Be it known that I, WILLIAM F. BARNES, of Orlando, in the county ofOrange and State of Florida, have invented certain new and use fulImprovements in Type; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an improvement in the method of making rubberstamps or casts and it consists essentially of setting up the desiredform of type provided onone end with raised letters or characters and onthe opposite end with letters or characters in intaglio, then obtaininga proof from the end containing the raised letters or characters, andfinally placing the rubber on the matrix or sunken letters andvulcanizing to produce the necessary rubber cast.

In the accompanying drawings, Figure 1 represents a face view of a typeembodying my invention with a letter in relief upon one end. Fig. 2 is aface view of the opposite end of the type with the same letter inintaglio, and Fig. 3 is a longitudinal view or elevation of said typehaving its lower end partly broken away or in section to better exposethe letter or character in intaglio and the outline of which sunken intothe metal of the type is of the same depth as the like letter orcharacter in relief upon the opposite end is high or raised.

A represents a type constructed of the usual or any suitable metal oralloy used in the printing art, or it may be made of any suitablematerial, but for all practical purposes it is made as ordinary printingtype is made with any desired letter or character bin relief upon oneend, while its opposite end is provided with a counterpart b of the sameletter or character, which latter is sunk into the metal or intaglio inform. The type is pro vided on one of its sides with the usual nick orgroove 0, to set the letters in a form of type all one way, and both theletters or characters in relief and thosein intaglio on the type 00;cupy a like relation as regards their bottoms to this nick or groove.The raised letter or character on one end of the type enables thecompositor to set up in the usual manner, take proof and correct errorsand is used exclusively for setting up, taking proof and distributing,while the sunken or intaglio letter or character upon the opposite endof the type is to form a matrix by means of which the required cast isobtained.

To use this improved type, or matrix type as it may be-termed, formaking rubber stamps or casts, for instance, byway of illustration, thedesired work is first set up in the usual manner of setting type toprint, that is, with the faces of the type having the raised letters ..Aor characters on them expose dto produce the required impression, takeproof and correct errors, the type in any number of pieces being lockedup in a chase as usual. The chase with its contents is then turned over.which presents tlge form in a matrix character, the. same type thenhaving their matrix ends,,7o that is, the ends with the sunken lettersor characters in them, exact counterparts of the; raised letters orcharacters, exposed. The rubber is then laid on the matrix form andvulcanized to produce the necessary rubber I cast.

By this invention the type being a matrix itself, every letter orcharacter in which is perfect, there is no possibility of a cast beingimperfectly made. No oil is used on the type and consequently they arenot soiled and do not stick together. It also saves the expense ofplaster of paris and the time and work usuall consumed in making aplaster matrix.

In devices heretofore used the same type have been used both forprinting the necessary proof and also for making the matrix, which factnecessitates the cleaning of the type, but with my device the cleaningof type is not necessary as the raised end of the type is only used forobtaining a proof of the work to be cast, and if the proof be correctthe form is reversed thus exposing the opposite ends of the type, inwhich position the necessary cast is obtained in the manner heretoforede- 5 scribed.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent is:

The method of making rubber stamps heretoo in described, consistingessentially of setting up the desired form of type provided on one endwith raised letters or characters and on In testimony whereof I havesigned this the opposite end with letters or characters in specificationin the presence of two subscriblntaglio, then obtaining a proof from theend ing Witnesses.

containingthe raisedletters orcharacters and WILLIAM F. BARNES. 5finally placing the rubber on the matrix or WVitnesses:

sunken letters and vulcanizing to produce 0. L. SHINN,

the necessary rubber cast. 0. \V. JAOOCKS.

